Leif Selim Segerstam ( , 2 March 1944 – 9 October 2024) was a Finnish music composer, conductor, violinist, violist, and pianist. He is especially best known for writing over 300 symphonies, along wit
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3cb99baf2441dc92f74525154d4d93fd4f63efbe3e3b73b602ada5a18d906a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58656847-3dc5-43ea-b486-c3a62dfa4fa7.json and https://artists.proofprofile.net/proofs/artist/58656847-3dc5-43ea-b486-c3a62dfa4fa7.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orientational Labyrinths in the Multiverses of Musical Sounds
Martin: Requiem - Janáček: Otče náš, JW IV/29 (Live)
Beethoven: Mass in C Major & Other Sacred Works
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
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Meeresstille und glückliche Fahrt, Op. 112
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Beethoven: König Stephan & Other Choral Works
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Leonore Prohaska, WoO 96: IV. Funeral March
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Beethoven: The Creatures of Prometheus, Op. 43
The Creatures of Prometheus, Op. 43, Act I: Ouverture. Adagio - Allegro molto con brio
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The Creatures of Prometheus, Op. 43, Act I: Introduction "La Tempesta". Allegro non troppo
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The Creatures of Prometheus, Op. 43, Act II: No. 5, Adagio - Andante quasi allegretto
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Beethoven: Christus am Ölberge, Op. 85 & Elegischer Gesang, Op. 118
Brahms: Symphony No. 4 in E Minor - Leif Segerstam: Symphony No. 295
Society of Finnish Composers 50th Anniversary 1995, Vol. 3
Brahms: Symphony No. 3, Op. 90 - Leif Segerstam: Symphony No. 294
Symphony No. 3 in F Major, Op. 90: III. Poco allegretto
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Brahms: Symphony No. 1 - Segerstam: Symphony No. 288 "Letting the FLOW Go On..."
A SR Tribute to Erling Blöndal Bengtsson
Earquake: The Loudest Classical Music of All Time
Scaramouche, Op. 71, Act I: Scene 1, Lento assai
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Scaramouche, Op. 71, Act I: Scene 2, Lento assai
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Scaramouche, Op. 71, Act I: Scene 6, Tempo di valse
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Scaramouche, Op. 71, Act II: Scene 6, Tranquillo assai
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Sibelius: Swanwhite, JS 189, The Lizard, Op. 8, The Lonely Ski Trail, JS 77b & The Countess's Portrait, JS 88
Toivo Kuula: South Ostrobothnian Suites 1 & 2, Festive March, Op. 13 and Prelude & Fugue, Op. 10
Sibelius: Jedermann, 2 Pieces & In memoriam
Sibelius: Pelleas and Melisande Suite, Musik zu einer Szene & 3 Pièces pour orchestre
Pelleas and Melisande Suite, Op. 46, JS 147: II. Melisande
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Pelleas and Melisande Suite, Op. 46, JS 147: IIa. At the seashore
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Pelleas and Melisande Suite, Op. 46, JS 147: III. Spring in the Park
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Pelleas and Melisande Suite, Op. 46, JS 147: V. Pastorale
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Pelleas and Melisande Suite, Op. 46, JS 147: VII. Entr'acte
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Pelleas and Melisande Suite, Op. 46, JS 147: VIII. The Death of Melisande
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3 Pièces pour orchestre, Op.96: No. 1, Valse lyrique
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Sibelius: Belshazzar's Feast & Other Orchestral Pieces
Sibelius: Kuolema, JS 113 & King Christian II, Op. 27
Sibelius: The Essential Orchestral Favourites
Piano Rhapsody - An Odyssey from Bach to Satie with Roland Pontinen
Society of Finnish Composers 50th Anniversary
Rinaldo, HWV 7, Act II Scene 4: Lascia ch'io pianga (Let me Lament)
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Lakmé: Blumenduett (Lara Croft Tomb Raider): Lakme, Act I: Dome epais, "Flower Duet"
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Carmen: Carmen, Act I: L'amour est un oiseau rebelle, "Habanera"
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Symphony No. 5 in C-Sharp Minor: IV. Adagietto: Sehr langsam
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Die Zauberflote (The Magic Flute), K. 620, Act II: Der Holle Rache… (Queen of the Night)
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Peer Gynt Suite No. 1, Op. 46: IV. In the Hall of the Mountain King
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Orchestral Suite No. 2 in B Minor, BWV 1067: VII. Badinerie
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The 4 Seasons: Violin Concerto in E Major, Op. 8, No. 1, RV 269, "La primavera" (Spring): The Four Seasons: Violin Concerto in E Major, Op. 8, No. 1, RV 269, "Spring": I. Allegro
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Swan Lake, Op. 20, Act II No. 10: Scene, "Swan Theme"
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Violin Partita No. 3 in E Major, BWV 1006: I. Preludio
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An der schonen, blauen Donau (The Beautiful Blue Danube), Op. 314
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Symphony No. 5 in C Minor, Op. 67: I. Allegro con brio
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Liebesträume, S. 541: 3 Liebestraume, S541/R211: No. 3: Nocturne in A-Flat Major
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Bagatelle in A Minor, WoO 59, "Fur Elise"
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Brandenburg Concerto No. 3 in G Major, BWV 1048: III. Allegro
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Klavierkonzert Nr. 21 C-Dur, K. 467, "Elvira Madigan": 2. Andante (Elvira Madigan): Piano Concerto No. 21 in C Major, "Elvira Madigan": II. Andante
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Mandolin Concerto in C Major, RV 425: I. Allegro
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Symphony No. 41 in C Major, K. 551, "Jupiter": IV. Molto allegro
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Die Walkure, Act III: Ride of the Valkyries
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Toccata and Fugue in D Minor, BWV 565: Toccata
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Symphony No. 94 in G Major, Hob.I:94, "The Surprise": II. Andante
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1812 Festival Overture, Op. 49: 1812 Overture, Op. 49
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Nocturne No. 2 in E-Flat Major, Op. 9, No. 2
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Requiem in D Minor, K. 626: Sequence: V. Confutatis maledictis - Sequence: VI. Lacrimosa dies illa
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The Planets, Op. 32: IV. Jupiter, the Bringer of Jollity
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Music for the Royal Fireworks, HWV 351: IV. Le rejouissance
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Symphony No. 9 in E Minor, Op. 95, "From the New World": II. Largo
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Piano Sonata No. 11 in A Major, K. 331: III. Rondo alla turca: Allegretto
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3 Gymnopedies: No. 1. Lent et douloureux
Orchestre Symphonique et Lyrique de Nancy
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Serenade No. 13 in G Major, K. 525, "Eine kleine Nachtmusik": I. Allegro
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Piano Concerto in A Minor, Op. 16: I. Allegro moderato
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Water Music: Suite No. 1 in F Major, HWV 348: VI. Air
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The Well-Tempered Clavier, Book I: Well-Tempered Clavier, Book I: Prelude and Fugue No. 1 in C Major, BWV 846
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The 4 Seasons: Violin Concerto in F Minor, Op. 8, No. 4, RV 297, "L'inverno" (Winter): II. Largo
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Rinaldo, HWV 7a: Lascia ch'io pianga (Let me lament)
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Piano Sonata No. 14 in C-Sharp Minor, Op. 27, No. 2, "Moonlight": I. Adagio sostenuto
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Suite bergamasque: III. Clair de lune (orch. A. Caplet)
Rheinland-Pfalz State Philharmonic Orchestra
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The Nutcracker Suite, Op. 71a: III. Dance of the Sugar Plum Fairies
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Also sprach Zarathustra, Op. 30, TrV 176: I. Einleitung
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Gianni Schicchi: O mio babbino caro (Lauretta)
Belgian Radio and Television Philharmonic Orchestra
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Serse (Xerxes), HWV 40, Act I: Ombra mai fu: Largo (Serse)
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Nabucco, Act III: Va, pensiero, "Chorus of Hebrew Slaves"
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Prélude à l'après-midi d'un faune, L. 86: Prelude a l'apres-midi d'un faune
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Le nozze di Figaro, K. 492, Act I: Overture
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La crème de la crème: La musique classique
Celebrate Beethoven: Rarities & World Premieres
Signor Abate!, WoO 178 (Arr. T. Holmes for Choir & Piano)
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The Essentials: Greatest Classics, Vol. 1
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Piano Concerto No. 21 in C Major, K. 467, "Elvira Madigan": II. Andante
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Symphony No. 4 in A Major, Op. 90, "Italian": I. Allegro vivace
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Piano Sonata No. 11 in A Major, K. 331: III. Alla turca: Allegretto (arr. for orchestra)
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The Four Seasons, Violin Concerto in E Major, Op. 8 No. 1, RV 269 "Spring": The 4 Seasons: Violin Concerto in E Major, Op. 8, No. 1, RV 269, "La primavera" (Spring): I. Allegro
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Also sprach Zarathustra, Op. 30, TrV 176: I. Also sprach Zarathustra
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Peer Gynt Suite No. 1, Op. 46: IV. I Dovregubbens hall (In the Hall of the Mountain King)
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Liebestraume, S541/R211: No. 3. Nocturne in A-Flat Major
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Thaïs: Thais, Act II: Meditation (version for violin and piano)
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Suite for Jazz Orchestra No. 2: Jazz Suite No. 2: VI. Waltz No. 2
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Serenade for Strings in E Major, Op. 22: II. Tempo di Valse
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Spiegel im Spiegel (Version for Violin & Piano)
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The Four Seasons, Violin Concerto in G Minor, Op. 8 No. 2, RV 315 "Summer": I. Allegro non moto
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A Spirit's Whisper: Selected Works by Bo Nilsson
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Quartet for Flute, Oboe, Clarinet & Cello, Op. 31: I. Andante - Allegro moderato - Andante
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Don Giovanni, K. 527: Don Giovanni, a cenar teco
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Great Swedish Singers: Gunilla af Malmborg (1963-1985)
Die Zauberflöte, K. 620: Der Hölle Rache
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Peer Gynt, Op. 23: In the Hall of the Mountain King
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Finland 100: A Century of Finnish Classics
A Guided Tour of the Romantic Era, Vol. 8
Orchestral Music - Leif, S. / Shostakovich, D. / Nielsen, C. / Schulhoff, E. (Earquake)
Shostakovich & Sibelius: The First Symphonies - Live at the St. Petersburg Philharmonia Grand Hall
Die Geschöpfe des Prometheus, Op. 43 (Excerpts): Overture
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Segerstam: Symphonies Nos. 81, 162 & 181
Leif Segerstam: Symphony No. 18; Epitaph No. 6; Impressions of Nordic Nature No. 4
Segerstam: Chamber and Instrumental Music for Cello and Piano
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